Which planet has the most gravity? – All about Jupiter
Jupiter is a planet in our solar system. It is a gas giant, which means it doesn’t have a solid surface. It is one of the brightest objects in the sky and is covered in stripes or ‘bands’ of swirling clouds. These are storms; some have been going on for hundreds of years. It also has rings that are faint and hard to see. Jupiter is the fifth-closest planet to the sun.
Jupiter has a mass of 1.898 x 1027 kilograms. This is a huge number to try and imagine, but it’s easier to think about other planets. Jupiter is 2.5 times more massive than every planet in our Solar System combined. Another way of thinking is that Jupiter’s mass equals 318 times Earth’s. Jupiter’s mass is an incredible force. It has its mass in astronomy called Jupiter Mass (aka Jovian Mass).
Jupiter is so massive that it could shrink if it gained too much mass! This is due to something called gravitational compression. But what is gravitational compression?
Gravitational compression would begin when no more hydrogen or helium gas is floating around for a planet like Jupiter to collect. At this point, the world would gain mass by gathering things like asteroids. Jupiter’s huge gravity would tightly pull this extra rock into a dense structure. Removing the stone together like this would make it smaller as it became dense. As the density increased, so would gravity. This would compress the planet even more. Scientists estimate that Jupiter would have to collect 3-4 times its current mass to begin compressing. There isn’t much material in our solar system, so we don’t need to worry too much about this happening.
Jupiter’s diameter comes in at a giant 86,881.4 miles! Saturn’s second-biggest diameter at 72,367.4 miles is much bigger than the next biggest planet. Jupiter is big enough to fit any object (other than the Sun or Saturn) in our Solar System.
Scientists use Earth’s gravity as the standard to compare the gravity of all other planets and celestial bodies. The gravity of our planet is equal to 9.807 meters per second2. This means that if something is held above the ground and then dropped, it will fall towards the surface at a speed of around 9.8 meters for every second it falls.
This helps to give us a better understanding of Jupiter’s gravity. Jupiter’s gravity is 24.79 m/s² (81.33 ft/s²). One thing to remember is that Jupiter doesn’t have a solid surface like Earth. Instead, Jupiter is a gas giant, and scientists believe that if you tried to stand on Jupiter, you would sink until you reached the planet’s core.
Because of this, gas giants like Jupiter have their surface gravity measured by the force of gravity at their cloud tops rather than the planet’s surface.
However, other gas giants don’t have even close to as much gravity as Jupiter. Neptune comes in second at 11.15 m/s², followed by Saturn at 10.44 m/s. However, Jupiter’s gravity pales in comparison to the Sun, which has a gravity of 274 m/s².
Other planets, gravity, and interesting facts!
Gravity on Mercury:
Mercury is the smallest and least massive planet in the solar system.
With a mean radius of about 2,440 km and a mass of 3.30 × 1023 kg, Mercury is approximately 0.383 times the size of Earth and only 0.055 as massive. It has a fairly high density of 5.427 g/cm3, slightly lower than Earth’s 5.514 g/cm3. This means that Mercury’s surface gravity is 3.7 m/s2 or 0.38 g.
Gravity on Venus:
Venus is sometimes called ‘Earth’s twin’ because it’s quite similar to our planet.
It has a mean radius of 4.6023×108km2 and a mass of 4.8675×1024kg. Venus also has a density of 5.243 g/cm3. Venus is the size of 0.9499 Earths and is 0.815 times as massive and roughly 0.95 times as dense as Earth. It’s easy to see why Venus has gravity almost like Earth’s, coming in at 8.87 m/s2, or 0.904 g.
Gravity on the Moon:
The study of gravity on the Moon is unique, as we have been able to visit it in person. Astronauts can travel to the Moon and walk on its surface using space suits. If you’ve ever seen footage of anyone walking on the Moon, you’ll notice how they move very differently from how we move around on Earth. While part of this concerns how difficult it is to move inside a space suit, gravity is also a big factor. In interviews, Buzz Aldrin, an American astronaut, said it feels like bouncing on a trampoline without the springiness and instability.
Because of the reduced gravity, you weigh less on the Moon than on Earth—around 17% of your Earth’s weight. This is why astronauts tend to adjust how they move and almost ‘hop’ around on the Moon, as there’s less force pulling them down to the surface when they take a step.
The Moon has a mean radius of 1737 km, a mass of 7.3477 x 1022kg, and a density of 3.3464 g/cm3. The Apollo astronauts measured the surface gravity on the Moon to be 1.62 m/s2, or 0.1654 g. It is very important to learn about gravity for space travel. If humans ever travel to any other planets in our solar system, it is critical to consider the planet’s gravity to keep the astronauts safe.
Gravity on Mars:
Mars is also quite like Earth in some ways, though it is much smaller.
Its 3.389 km mean radius makes it the equivalent of roughly 0.53 Earths. In terms of mass, it weighs 6.4171×1023kg or just 0.107 Earths. Its density, meanwhile, is about 0.71 of Earth’s. This means that Mars has 0.38 times the gravity of Earth, which works out to 3.711 m/s2.
Gravity on Saturn:
Saturn is a huge gas giant, much more massive than Earth but far less dense. Its mean radius is approximately the size of 9.13 Earths, and its mass is 5.6846×1026kg or 95.15 times huge. Saturn also has a density of 0.687 g/cm3. Its surface gravity is just slightly more than Earth’s.
Gravity on Uranus:
Uranus is four times the size of Earth and 14.536 times as massive. However, it is a gas giant, so its density (1.27 g/cm3) is much lower than Earth’s. This means its surface gravity of 8.69 m/s2, or 0.886 g, is a bit weaker than on Earth.
Gravity on Neptune:
Neptune is the fourth-largest planet in the solar system. It is 3.86 times the size of Earth and 17 times as massive. However, it is a gas giant and therefore has a lower density. This adds a surface gravity of 11.15 m/s2(or 1.14 g). Sincerity in our solar system ranges from 0.38 g on Mercury and Mars to a powerful 2.528g on Jupiter. Well, on the top of Jupiter’s clouds, at least.
What is gravity?
Gravity is a force that draws objects together. It works in a few different ways, but on Earth, objects are pulled toward the planet’s center. The gravitational force that an object exerts is calculated based on three things: its density, mass, and size.
The force of gravity also keeps all planets in orbit around the sun. Anything that has mass also has gravity. Objects with more mass have more gravity. The further away something is, the weaker the gravity or ‘gravitational pull. We couldn’t live without gravity. The sun’s gravity keeps Earth in orbit around it, keeping us at an ideal distance to enjoy the sunlight and keep warm. It holds down our atmosphere and the air we need to be able to breathe.